References
 Azzolino, Agnes "algorithm"
 © 2005 at www.mathnstuff.com/math/spoken/here/1words/a/a11.htm
 (last modified 2005), visited 10 April 2009.
 Azzolino, Agnes "Multiplication & Division"
 © 2008 at www.mathnstuff.com/math/algebra/tt15.htm#divide
 visited 10 April 2009.
 Azzolino, Agnes "multiple"
 © 2005 at www.mathnstuff.com/math/spoken/here/1words/m/m29.htm
 visited 10 April 2009.
 Wikipedia®', Wikimedia Foundation, Inc.,
 "Napier's bones  From Wikipedia, the free encyclopedia"
 GNU Free Documentation License at http://en.wikipedia.org/wiki/Napier%27s_bones
 (last modified 16 March 2009, at 20:42 (UTC) ), visited 10 April 2009.
